After this began an ALL OUT silent Easter egg war, in which each director would include a reference to the other’s work in their ongoing films. This went on to include The Evil Dead being played on a TV in the background during A Nightmare on Elm Street and a Freddy Kruger glove being planted in the background of The Evil Dead II. In short: I love petty horror drama!

Source: https://www.buzzfeed.com/alliehayes/horror-movie-easter-eggs-details-reddit